I'm not sure if members of this list would find this type of e-mail useful (please let me know if you do... or don't), but here goes:
A common problem in text encoding is locating the correct codes for "unusual letters". There are various utilities for doing this in windows, mac, and Linux. But here is a useful web-based utility.You can use it to look up character names and find their code point (though you do have to be fairly precise), and it will produce the correct number in hex and decimal formats. It will also tell you everything you ever wanted to know about characters required for encoding Estonian.
See also the Digital Medievalist Wiki entry for character encoding http://sql.uleth.ca/dmorgwiki/index.php/Fonts (to which I have just added information about this site).
-dan